Wave Optics questions with solutions

Showing 1–10 of 161 questions

• NumericeasyWave Opticsinterferece of light and huygen principle

  Two coherent sources produce intensities 4I and I separately at a point P. The two waves arrive at P exactly out of phase. If the resultant intensity is NI, find N.

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent point sources A and B are in phase and are separated by 3.6λ. A circular path is centred at the midpoint of AB and has radius greater than AB ÷ 2, so that both sources lie inside the circle. An observer moves once around the complete circle. How many positions of maximum intensity are encountered?

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• NumericmediumWave Opticsinterferece of light and huygen principle

  Two coherent in-phase point sources are separated by 5.2λ. A circular observation path is centred at their midpoint and encloses both sources. During one complete revolution, how many positions of maximum intensity are encountered?

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• MCQeasyWave Opticsinterferece of light and huygen principle

  For two fixed coherent point sources A and B, the locus of points for which the magnitude of the path difference |PA-PB| is a fixed non-zero constant is generally a

  Options

  • Option A

    circle

  • Option B

    parabola

  • Option C

    hyperbola

  • Option D

    straight line

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• MCQmediumWave Opticsyoung's dubble slit experiments

  In a Young double-slit experiment, the maximum fringe intensity is I₀. The slit separation is d = 5λ, where λ is the wavelength. The screen is at distance D = 10d from the slit plane. What is the intensity at the point on the screen lying exactly opposite one of the slits?

  Options

  • Option A

    I₀ / 4

  • Option B

    I₀ / 2

  • Option C

    I₀

  • Option D

    3I₀ / 4

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• MCQmediumWave Opticsdiffraction of light

  In a single-slit Fraunhofer diffraction pattern, a direction satisfies a sinθ = 3λ ÷ 2. If I₀ is the central maximum intensity, what is I ÷ I₀ at this direction?

  Options

  • Option A

    4 ÷ (9π²)

  • Option B

    4 ÷ π²

  • Option C

    1 ÷ 9

  • Option D

    1 ÷ 4

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• MCQmediumWave Opticsyoung's dubble slit experiments

  In the Young double-slit arrangement shown in the figure, the incident wavelength is 6000 Å and the screen is 50 cm from the slit plane. At point P, the resultant intensity is equal to the intensity produced by either slit individually. Assuming the two slits contribute equal intensities, what is the path difference between the two interfering waves at P?

  

  Options

  • Option A

    4000 Å

  • Option B

    3000 Å

  • Option C

    2000 Å

  • Option D

    1000 Å

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• MCQmediumWave Opticsyoung's dubble slit experiments

  In Young's double-slit experiment, white light is used. One slit is covered with a red filter and the other with a green filter. What is observed?

  Options

  • Option A

    Separate red and green interference patterns are formed

  • Option B

    No stable interference fringes are formed

  • Option C

    Alternate red and green interference fringes are formed

  • Option D

    Each fringe has a green centre and red outer edges

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• IntegereasyWave Opticsyoung's dubble slit experiments

  In a Young double-slit experiment, the intensity at a point on the screen is 3 /4 of the maximum intensity. If the path difference at that point is λ /x, where λ is the wavelength, find x.

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• MCQeasyWave OpticsYoung's Double Slit Experiment

  In a Young's double-slit experiment, the amplitudes of light coming from the two slits are in the ratio 2:1. The ratio of maximum to minimum intensity is:

  Options

  • Option A

    9 : 1

  • Option B

    9 : 4

  • Option C

    2 : 1

  • Option D

    25 : 9

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